EP 2855766 B1 20190807 - METHODS OF PRESERVING STARCH IN PULP
Title (en)
METHODS OF PRESERVING STARCH IN PULP
Title (de)
VERFAHREN ZUR KONSERVIERUNG VON STÄRKE IN ZELLSTOFF
Title (fr)
PROCÉDÉS DE CONSERVATION D'AMIDON DANS UNE PÂTE
Publication
Application
Priority
- US 201261655678 P 20120605
- US 2013043962 W 20130604
Abstract (en)
[origin: US2013319627A1] Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.
IPC 8 full level
D21C 3/18 (2006.01); A01N 59/00 (2006.01); C02F 1/50 (2006.01); C02F 1/76 (2006.01); C02F 3/28 (2006.01); C04B 18/24 (2006.01); D06M 16/00 (2006.01); D21C 3/20 (2006.01); D21C 11/00 (2006.01); D21H 17/11 (2006.01); D21H 21/04 (2006.01); D21H 21/36 (2006.01); C02F 101/10 (2006.01); C02F 103/28 (2006.01)
CPC (source: CN EP US)
A01N 59/00 (2013.01 - EP US); C02F 3/28 (2013.01 - CN EP US); D06M 16/00 (2013.01 - CN EP US); D21C 3/18 (2013.01 - CN EP US); D21C 3/20 (2013.01 - CN EP US); D21C 11/0078 (2013.01 - US); D21H 17/11 (2013.01 - CN EP US); D21H 21/04 (2013.01 - CN EP US); D21H 21/36 (2013.01 - CN EP US); C02F 1/76 (2013.01 - CN EP US); C02F 2101/10 (2013.01 - CN EP US); C02F 2103/28 (2013.01 - CN EP US); C02F 2303/22 (2013.01 - CN EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2013319627 A1 20131205; US 8764942 B2 20140701; AU 2013271855 A1 20150115; AU 2013271855 B2 20161006; AU 2013271855 C1 20171130; AU 2016231513 A1 20161013; AU 2016231513 B2 20180308; BR 112014030368 A2 20210706; BR 112014030368 B1 20220705; BR 122022000561 B1 20220503; CA 2875663 A1 20131212; CA 2875663 C 20170627; CN 104520499 A 20150415; CN 104520499 B 20170315; EP 2855766 A1 20150408; EP 2855766 B1 20190807; EP 3556934 A1 20191023; EP 3556935 A1 20191023; ES 2743722 T3 20200220; IL 236050 A0 20150129; IL 236050 B 20180228; JP 2015525308 A 20150903; JP 2017106157 A 20170615; JP 2019011549 A 20190124; JP 2020073740 A 20200514; JP 6275893 B2 20180207; JP 6446356 B2 20181226; JP 6740312 B2 20200812; JP 6992040 B2 20220113; MX 2014014605 A 20150220; MX 369222 B 20191031; NZ 702299 A 20161125; PT 2855766 T 20190918; US 2014246160 A1 20140904; US 2015284908 A1 20151008; US 9091024 B2 20150728; US 9347179 B2 20160524; WO 2013184605 A1 20131212; ZA 201408689 B 20160727
DOCDB simple family (application)
US 201313909119 A 20130604; AU 2013271855 A 20130604; AU 2016231513 A 20160921; BR 112014030368 A 20130604; BR 122022000561 A 20130604; CA 2875663 A 20130604; CN 201380039958 A 20130604; EP 13728914 A 20130604; EP 19171560 A 20130604; EP 19171602 A 20130604; ES 13728914 T 20130604; IL 23605014 A 20141203; JP 2015516099 A 20130604; JP 2017019302 A 20170206; JP 2018185965 A 20180928; JP 2019229842 A 20191220; MX 2014014605 A 20130604; NZ 70229913 A 20130604; PT 13728914 T 20130604; US 2013043962 W 20130604; US 201414277888 A 20140515; US 201514745484 A 20150622; ZA 201408689 A 20141126